Particle, electrode, power storage device, electronic device, and method for manufacturing electrode

Abstract

To increase capacity per weight of a power storage device, a particle includes a first region, a second region in contact with at least part of a surface of the first region and located on the outside of the first region, and a third region in contact with at least part of a surface of the second region and located on the outside of the second region. The first and the second regions contain lithium and oxygen. At least one of the first region and the second region contains manganese. At least one of the first and the second regions contains an element M. The first region contains a first crystal having a layered rock-salt structure. The second region contains a second crystal having a layered rock-salt structure. An orientation of the first crystal is different from an orientation of the second crystal.

What is claimed is: 
     
       1. A battery comprising a composite oxide containing lithium and manganese,
 wherein the composite oxide includes a first region, a second region and a third region, 
 wherein the second region and the third region are located on a more surface side than the first region, and are located on a surface layer of the composite oxide, 
 wherein the third region is located on a more surface side than the second region, 
 wherein the first region and the second region contain lithium and oxygen, 
 wherein at least one of the first region and the second region contains an element represented by M, 
 wherein the third region contains carbon and oxygen, 
 wherein the third region is partly in contact with the first region, and 
 wherein the element represented by M is a metal element selected from the group consisting of Ni, Ga, Fe, Mo, In, Nb, Nd, Co, Sm, Mg, Al, Ti, Cu and Zn, Si or P. 
 
     
     
       2. The battery according to  claim 1 , wherein a thickness of the second region is greater than or equal to 0.1 nm and less than or equal to 30 nm. 
     
     
       3. The battery according to  claim 1 , further comprising a positive electrode and a negative electrode,
 wherein the positive electrode includes a conductive additive, 
 wherein the conductive additive includes a carbon fiber or graphene, 
 wherein the negative electrode includes a negative electrode active material, and 
 wherein the negative electrode active material includes a carbon-based material. 
 
     
     
       4. A battery comprising a composite oxide containing lithium and manganese,
 wherein the composite oxide includes a first region, a second region and a third region, 
 wherein the second region and the third region are located on a more surface side than the first region, and are located on a surface layer of the composite oxide, 
 wherein the third region is located on a more surface side than the second region, 
 wherein the first region and the second region contain lithium and oxygen, 
 wherein at least one of the first region and the second region contains an element represented by M, 
 wherein the element represented by M is a metal element selected from the group consisting of Ni, Ga, Fe, Mo, In, Nb, Nd, Co, Sm, Mg, Al, Ti, Cu and Zn, Si or P, 
 wherein the third region contains carbon and oxygen, 
 wherein the third region is partly in contact with the first region, 
 wherein the first region includes a first crystal with a layered rock-salt structure, 
 wherein the second region includes a second crystal with a layered rock-salt structure, and 
 wherein an orientation of the first crystal is different from an orientation of the second crystal. 
 
     
     
       5. The battery according to  claim 4 , wherein a thickness of the second region is greater than or equal to 0.1 nm and less than or equal to 30 nm. 
     
     
       6. The battery according to  claim 4 , wherein a thickness of the third region is greater than or equal to 0.1 nm and less than or equal to 30 nm. 
     
     
       7. The battery according to  claim 4 , wherein a proportion of oxygen in the third region is higher than or equal to 2 atomic % and lower than or equal to 20 atomic %. 
     
     
       8. The battery according to  claim 4 , further comprising a positive electrode and a negative electrode,
 wherein the positive electrode includes a conductive additive, 
 wherein the conductive additive includes a carbon fiber or graphene, 
 wherein the negative electrode includes a negative electrode active material, and 
 wherein the negative electrode active material includes a carbon-based material.